These are just some products that I've found on my way that I think are worth mentioning. I only want to add really good sites, so this one will grow slowly...

Floralytes: These very bright LED's are really handy for any home haunter. As our haunts get knotted with extension cords everywhere, these are a nice alternative. Normally used for wedding receptions, they are cheap and come in a submersible version as well. Here's a video that I took of the color changing one. This is what the submersible ones look like...Not bad for only $2.25 each!